First Bancorp, Inc /ME/

AFS Debt Securities in an Unrealized Loss Position

The securities portfolio contains certain AFS securities where the amortized cost of which exceeds fair value, which at September 30, 2025 amounted to $42.9 million, or 13.56% of the amortized cost of the total securities portfolio. At December 31, 2024, this amount was $54.2 million, or 16.48% of the amortized cost of total securities portfolio.

The Company's evaluation of securities for impairment is a quantitative and qualitative process intended to determine whether declines in the fair value of investment securities should be recognized as a charge against the ACL. The primary factors considered in evaluating whether a loss should be recognized include: (a) the length of time and extent to which the fair value has been less than cost or amortized cost and the expected recovery period of the security, (b) the financial condition, credit rating and future prospects of the issuer, (c) whether the debtor is current on contractually obligated interest and principal payments, (d) the volatility of the securities market price, (e) the intent and ability of the Company to retain the investment for a period of time sufficient to allow for recovery, which may be at maturity, and (f) any other information and observable data considered relevant in determining whether full collection of amounts contractually due will be realized.

The Company's best estimate of cash flows uses severe economic recession assumptions due to market uncertainty. The Company's assumptions include but are not limited to delinquencies, foreclosure levels and constant default rates on the underlying collateral, loss severity ratios, and constant prepayment rates. If the Company does not expect to receive 100% of future contractual principal and interest, a charge against the ACL is recognized. Estimating future cash flows is a quantitative and qualitative process that incorporates information received from third party sources along with certain internal assumptions and judgments regarding the future performance of the underlying collateral.

As of September 30, 2025, the Company had AFS debt securities in an unrealized loss position with a fair value of $238.1 million and unrealized losses of $42.9 million, as identified in the table below. AFS Securities in a continuous unrealized loss position for more than twelve months amounted to a fair value of $232.9 million as of September 30, 2025, compared with $234.1 million at December 31, 2024. The Company has concluded that these securities are fully collectible and that no charge against the allowance is required. This conclusion was based on the issuer's continued satisfaction of the securities obligations in accordance with their contractual terms and the expectation that the issuer will continue to do so, Management's intent and ability to hold these securities for a period of time sufficient to allow for any anticipated recovery in fair value which may be at maturity, the expectation that the Company will receive 100% of future contractual cash flows, as well as the evaluation of the fundamentals of the issuer's financial condition and other objective evidence. The following table summarizes AFS debt securities in an unrealized loss position for which an ACL has not been recorded at September 30, 2025:

For AFS securities with unrealized losses, the following information was considered in determining that no charge against the allowance for decline in fair value was required in the current reporting period:

AFS Securities issued by the U.S. Treasury and U.S. Government-sponsored agencies & enterprises. As of September 30, 2025, there were $5.2 million of unrealized losses on these securities compared to $6.2 million at December 31, 2024. All of these securities were credit rated "AAA" or "AA+" by the major credit rating agencies. Management believes that securities issued by the U.S. Treasury and U.S. Government-sponsored agencies and enterprises carry zero or near-zero credit risk, and that 100% of the amounts contractually due will be collected.

AFS Mortgage-backed securities issued by U.S. Government agencies and U.S. Government-sponsored enterprises. As of September 30, 2025, there were $31.8 million of unrealized losses on these securities compared with $41.0 million at December 31, 2024. All of these securities were credit rated "AAA" or "AA+" by the major credit rating agencies. Management believes that securities issued by U.S. Government agencies bear no credit risk because they are backed by the full faith and credit of the United States and that securities issued by U.S. Government-sponsored enterprises have minimal credit risk, as these agencies and enterprises play a vital role in the nation's financial markets. Management believes that the unrealized losses at September 30, 2025 were attributable to changes in current market yields and spreads since the date the underlying securities were purchased, and that 100% of the amounts contractually due will be realized. The Company also has the ability and intent to hold these securities until a recovery of their amortized cost, which may be at maturity.

AFS Obligations of state and political subdivisions. As of September 30, 2025, there were $5.9 million of unrealized losses on these securities compared to $6.9 million at December 31, 2024. Municipal securities are supported by the general taxing authority of the municipality or a dedicated revenue stream, and, in the case of school districts, are generally supported by state aid. At September 30, 2025, all municipal bond issuers were current on contractually obligated interest and principal payments. The Company attributes the unrealized losses at September 30, 2025 to changes in prevailing market yields and pricing spreads since the date the underlying securities were purchased, combined with general market conditions. The Company has the ability and intent to hold these securities until a recovery of their amortized cost, which may be at maturity, and believes that 100% of the amounts contractually due will be realized.

AFS Asset-backed securities. As of September 30, 2025, there were $31,000 of unrealized losses on these securities compared with none at December 31, 2024. These securities consist of U.S. Government backed student loans along with other credit enhancements.